The day of the android has dawned. - Brian Aldiss

Jagger had gone through there. Harley also went through. Somewhere he did not know, somewhere whose existence he had not guessed.… Somewhere that wasn't the house.…

That first novel of mine, Non-Stop, is directly attributable to Heinlein. His "Common Sense" seemed to me such a good story, but bereft of any human feelings. I thought long about that story, and then I thought how wonderful it would be to write about a spaceship in which people have been imprisoned for generations and to put in something of the human feeling. So that novel is directly attributable to Heinlein. I thought, in my youthful arrogance, that I could do it better — I didn't! I thought I could do it differently, and I think I did do it differently. And I suppose that on the whole, I've concentrated on doing things differently ever since.

What we see today is the too-easy acceptance of sf. The sharp idiom we created has blurred to become one of the bland flavourings of mass media; the unembarrassed muse we espoused is one of the jades of television. And the younger writers now writing have an entirely different approach to their art. They have found how easy it is to rely on formula, or how simply success can come through self-advertisement.